<template>
  <a-layout>
    <a-layout-content
            :style="{ background: '#fff', padding: '24px', margin: 0, minHeight: '280px' }"
    >
      <p>
        <a-form layout="inline" :model="param">
          <a-form-item>

            <a-button type="primary" @click="handleQuery()">
              查询
            </a-button>
          </a-form-item>
          <a-form-item>
            <a-button type="primary" @click="add()">
              新增
            </a-button>
          </a-form-item>
        </a-form>


      </p>
      <a-table
              :columns="columns"
              :row-key="record => record.id"
              :data-source="level1"
              :loading="loading"
              :pagination="false"
      >
        <template #cover="{ text: cover }">
          <img v-if="cover" :src="cover" alt="avatar" />
        </template>
        <template v-slot:action="{ text, record }">
          <a-space size="small">
            <a-button type="primary" @click="edit(record)">
              编辑
            </a-button>
            <a-popconfirm
                    title="删除后不可恢复，确认删除?"
                    ok-text="是"
                    cancel-text="否"
                    @confirm="handleDelete(record.id)"
            >
              <a-button type="danger" >
                删除
              </a-button>
            </a-popconfirm>
          </a-space>
        </template>
      </a-table>
    </a-layout-content>
  </a-layout>

  <a-modal
          title="分类表单"
          v-model:visible="modalVisible"
          :confirm-loading="modalLoading"
          @ok="handleModalOk"
  >
    <a-form :model="category" :label-col="{ span: 6 }" :wrapper-col="{ span: 18 }">

      <a-form-item label="名称">
        <a-input v-model:value="category.name" />
      </a-form-item>
      <a-form-item label="父分类">
        <a-input v-model:value="category.parent" />
        <a-select
                v-model:value="category.parent"
                ref="select"
        >
          <a-select-option value="0">无</a-select-option>

          <a-select-option v-for="c in level1"  :key="c.id" :value="c.id"  :disabled="category.id===c.id">
            {{c.name}}
          </a-select-option>

        </a-select>

      </a-form-item>

      <a-form-item label="排序">
        <a-input v-model:value="category.sort" type="textarea" />
      </a-form-item>
    </a-form>


  </a-modal>
</template>

<script lang="ts">
  import { defineComponent, onMounted, ref } from 'vue';
  import axios from 'axios';
  import { message } from 'ant-design-vue';
  import {Tool} from "@/util/tool";

  export default defineComponent({
    name: 'AdminCategory',
    setup() {
      const param = ref();
      param.value = {};
      const categorys = ref();
      const loading = ref(false);

      const columns = [

        {
          title: '名称',
          dataIndex: 'name'
        },
        {
          title: '父分类',
          key: 'parent',
          dataIndex: 'parent'
        },

        {
          title: '排序',
          dataIndex: 'sort'
        },

        {
          title: 'Action',
          key: 'action',
          slots: { customRender: 'action' }
        }
      ];

      /**
       * 一级分类树，children属性就是二级分类
       * [{
       *   id: "",
       *   name: "",
       *   children: [{
       *     id: "",
       *     name: "",
       *   }]
       * }]
       */
      const level1 = ref(); // 一级分类树，children属性就是二级分类

      /**
       * 数据查询
       **/
      const handleQuery = () => {
        loading.value = true;
        // 如果不清空现有数据，则编辑保存重新加载数据后，再点编辑，则列表显示的还是编辑前的数据
        level1.value = [];
        axios.get("/category/all").then((response) => {
          loading.value = false;
          const data = response.data;
          if(data.success){
            categorys.value = data.content;
            console.log("原始数组",categorys.value)

            level1.value=[];
            level1.value=Tool.array2Tree(categorys.value,0);
            console.log("树形结构",level1)

          }
          else{
            message.error(data.message);
          }
        });
      };


      // -------- 表单 ---------
      const category=ref({});
      const modalVisible = ref(false);
      const modalLoading = ref(false);
      const handleModalOk = () => {
        modalLoading.value = true;
        axios.post("/category/save", category.value).then((response) => {
          modalLoading.value = false;
          const data = response.data;
          if(data.success){
            modalVisible.value = false;
            //重新加载列表
            handleQuery();
          }else{
            message.error(data.message)
          }
        });
      };

      /**
       * 编辑
       */
      const edit = (record:any) => {
        modalVisible.value = true;
        category.value=Tool.copy(record);
      };

      /**
       * 新增
       */
      const add = () => {
        modalVisible.value = true;
        category.value={}
      };

      const handleDelete = (id:number) => {
        axios.delete("/category/delete/"+id).then((response) => {

          const data = response.data;
          //重新加载列表 --------------------------------相比较源码没加if判断
          if(data.success){
            handleQuery();
          }
        });
      };


      onMounted(() => {
        handleQuery();
      });

      return {
        param,
      //  categorys,
        level1,
        columns,
        loading,

        handleQuery,


        edit,
        add,


        category,
        modalVisible,
        modalLoading,
        handleModalOk,

        handleDelete


      }
    }
  });
</script>

<style scoped>
  img {
    width: 50px;
    height: 50px;
  }
</style>